./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '2a46b64c20324a7544dfe7936b5f39eaa32bba659068797748195a7f292bdaee'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a46b64c20324a7544dfe7936b5f39eaa32bba659068797748195a7f292bdaee --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:31:17,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:31:17,942 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:31:17,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:31:17,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:31:17,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:31:17,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:31:17,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:31:17,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:31:17,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:31:17,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:31:17,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:31:17,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:31:17,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:31:17,985 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:31:17,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:31:17,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:31:17,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:31:17,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:31:17,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:31:17,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:31:17,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:31:17,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:31:17,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:31:17,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:31:17,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:31:17,988 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a46b64c20324a7544dfe7936b5f39eaa32bba659068797748195a7f292bdaee [2024-11-06 18:31:18,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:31:18,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:31:18,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:31:18,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:31:18,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:31:18,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c [2024-11-06 18:31:19,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:31:19,836 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:31:19,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c [2024-11-06 18:31:19,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bbac18f08/2e24d97f49a74e89ae49dd6ede1cadbb/FLAG0e3e79755 [2024-11-06 18:31:19,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bbac18f08/2e24d97f49a74e89ae49dd6ede1cadbb [2024-11-06 18:31:19,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:31:19,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:31:19,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:31:19,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:31:19,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:31:19,874 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:31:19" (1/1) ... [2024-11-06 18:31:19,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e08ff4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:19, skipping insertion in model container [2024-11-06 18:31:19,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:31:19" (1/1) ... [2024-11-06 18:31:19,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:31:20,021 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c[416,429] [2024-11-06 18:31:20,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:31:20,051 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:31:20,060 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-multidimensional/copy-partial-2-n-u.c[416,429] [2024-11-06 18:31:20,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:31:20,089 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:31:20,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20 WrapperNode [2024-11-06 18:31:20,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:31:20,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:31:20,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:31:20,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:31:20,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,122 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2024-11-06 18:31:20,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:31:20,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:31:20,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:31:20,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:31:20,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,149 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-06 18:31:20,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:31:20,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:31:20,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:31:20,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:31:20,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (1/1) ... [2024-11-06 18:31:20,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:31:20,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:20,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 18:31:20,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 18:31:20,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 18:31:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:31:20,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:31:20,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:31:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:31:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-06 18:31:20,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:31:20,293 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:31:20,295 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:31:20,425 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-06 18:31:20,425 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:31:20,433 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:31:20,434 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-06 18:31:20,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:31:20 BoogieIcfgContainer [2024-11-06 18:31:20,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:31:20,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:31:20,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:31:20,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:31:20,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:31:19" (1/3) ... [2024-11-06 18:31:20,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdc2955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:31:20, skipping insertion in model container [2024-11-06 18:31:20,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:31:20" (2/3) ... [2024-11-06 18:31:20,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cdc2955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:31:20, skipping insertion in model container [2024-11-06 18:31:20,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:31:20" (3/3) ... [2024-11-06 18:31:20,444 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-2-n-u.c [2024-11-06 18:31:20,456 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:31:20,456 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:31:20,504 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:31:20,513 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4bcab079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:31:20,513 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:31:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:20,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-06 18:31:20,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:20,525 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:20,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:20,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1214404279, now seen corresponding path program 1 times [2024-11-06 18:31:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271488774] [2024-11-06 18:31:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:20,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:20,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:31:20,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:20,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271488774] [2024-11-06 18:31:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271488774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:31:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:31:20,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-06 18:31:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672979102] [2024-11-06 18:31:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:31:20,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-06 18:31:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:20,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-06 18:31:20,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 18:31:20,723 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:20,736 INFO L93 Difference]: Finished difference Result 53 states and 82 transitions. [2024-11-06 18:31:20,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-06 18:31:20,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-06 18:31:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:20,742 INFO L225 Difference]: With dead ends: 53 [2024-11-06 18:31:20,742 INFO L226 Difference]: Without dead ends: 24 [2024-11-06 18:31:20,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-06 18:31:20,747 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:20,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:31:20,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-06 18:31:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-06 18:31:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-06 18:31:20,780 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 21 [2024-11-06 18:31:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:20,782 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-06 18:31:20,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:20,782 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-11-06 18:31:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-06 18:31:20,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:20,784 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:20,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:31:20,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:20,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -115778185, now seen corresponding path program 1 times [2024-11-06 18:31:20,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:20,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184771950] [2024-11-06 18:31:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:20,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:31:21,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184771950] [2024-11-06 18:31:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184771950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:31:21,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:31:21,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:31:21,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134425180] [2024-11-06 18:31:21,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:31:21,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:31:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:31:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,037 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:21,106 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-06 18:31:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:31:21,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-06 18:31:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:21,109 INFO L225 Difference]: With dead ends: 39 [2024-11-06 18:31:21,109 INFO L226 Difference]: Without dead ends: 27 [2024-11-06 18:31:21,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,110 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:21,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:31:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-06 18:31:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-06 18:31:21,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-06 18:31:21,120 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2024-11-06 18:31:21,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:21,121 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-06 18:31:21,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-06 18:31:21,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-06 18:31:21,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:21,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:21,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 18:31:21,123 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:21,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:21,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1885240295, now seen corresponding path program 1 times [2024-11-06 18:31:21,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:21,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132788380] [2024-11-06 18:31:21,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:21,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-06 18:31:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132788380] [2024-11-06 18:31:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132788380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:31:21,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:31:21,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:31:21,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396565442] [2024-11-06 18:31:21,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:31:21,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:31:21,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:21,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:31:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,272 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:21,314 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2024-11-06 18:31:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:31:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-06 18:31:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:21,315 INFO L225 Difference]: With dead ends: 47 [2024-11-06 18:31:21,316 INFO L226 Difference]: Without dead ends: 32 [2024-11-06 18:31:21,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,317 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:21,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:31:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-06 18:31:21,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2024-11-06 18:31:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-11-06 18:31:21,322 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 24 [2024-11-06 18:31:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:21,322 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-11-06 18:31:21,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-11-06 18:31:21,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-06 18:31:21,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:21,323 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:21,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 18:31:21,324 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:21,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1922253734, now seen corresponding path program 1 times [2024-11-06 18:31:21,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:21,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682959996] [2024-11-06 18:31:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:21,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:21,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:21,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682959996] [2024-11-06 18:31:21,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682959996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:31:21,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:31:21,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:31:21,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784799637] [2024-11-06 18:31:21,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:31:21,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:31:21,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:21,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:31:21,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,473 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:21,540 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2024-11-06 18:31:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:31:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-11-06 18:31:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:21,543 INFO L225 Difference]: With dead ends: 47 [2024-11-06 18:31:21,543 INFO L226 Difference]: Without dead ends: 39 [2024-11-06 18:31:21,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,544 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:21,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 39 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:31:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-06 18:31:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2024-11-06 18:31:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-06 18:31:21,553 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 25 [2024-11-06 18:31:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:21,554 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-06 18:31:21,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-06 18:31:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 18:31:21,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:21,555 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:21,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 18:31:21,556 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:21,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1762203180, now seen corresponding path program 1 times [2024-11-06 18:31:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:21,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158202136] [2024-11-06 18:31:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:21,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:21,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:21,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158202136] [2024-11-06 18:31:21,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158202136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:31:21,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:31:21,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 18:31:21,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911450798] [2024-11-06 18:31:21,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:31:21,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 18:31:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 18:31:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,685 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:21,728 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2024-11-06 18:31:21,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 18:31:21,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-06 18:31:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:21,729 INFO L225 Difference]: With dead ends: 44 [2024-11-06 18:31:21,729 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 18:31:21,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-06 18:31:21,730 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:21,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 41 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:31:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 18:31:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-11-06 18:31:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-06 18:31:21,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 28 [2024-11-06 18:31:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:21,739 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-06 18:31:21,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-06 18:31:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-06 18:31:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-06 18:31:21,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:21,741 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:21,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 18:31:21,742 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:21,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1776938773, now seen corresponding path program 1 times [2024-11-06 18:31:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924066284] [2024-11-06 18:31:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:21,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924066284] [2024-11-06 18:31:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924066284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:31:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44067543] [2024-11-06 18:31:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:21,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:21,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:21,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:31:21,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 18:31:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:21,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:31:21,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:31:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:22,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:31:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44067543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:31:22,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:31:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-06 18:31:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497741234] [2024-11-06 18:31:22,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:31:22,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 18:31:22,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 18:31:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-06 18:31:22,114 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:22,235 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-11-06 18:31:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-06 18:31:22,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-06 18:31:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:22,236 INFO L225 Difference]: With dead ends: 73 [2024-11-06 18:31:22,236 INFO L226 Difference]: Without dead ends: 54 [2024-11-06 18:31:22,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-06 18:31:22,238 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:22,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 78 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:31:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-06 18:31:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2024-11-06 18:31:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-06 18:31:22,249 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 29 [2024-11-06 18:31:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:22,250 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-06 18:31:22,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-06 18:31:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-06 18:31:22,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:22,251 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:22,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 18:31:22,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:22,456 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:22,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash -474040682, now seen corresponding path program 2 times [2024-11-06 18:31:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:22,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646364655] [2024-11-06 18:31:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:22,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:22,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:22,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:22,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646364655] [2024-11-06 18:31:22,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646364655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:31:22,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351568558] [2024-11-06 18:31:22,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:31:22,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:22,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:22,626 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:31:22,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 18:31:22,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:31:22,712 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:31:22,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-06 18:31:22,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:31:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:22,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:31:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351568558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:31:22,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:31:22,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-06 18:31:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156176349] [2024-11-06 18:31:22,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:31:22,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-06 18:31:22,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-06 18:31:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-06 18:31:22,921 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:23,147 INFO L93 Difference]: Finished difference Result 118 states and 153 transitions. [2024-11-06 18:31:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-06 18:31:23,147 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-06 18:31:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:23,149 INFO L225 Difference]: With dead ends: 118 [2024-11-06 18:31:23,149 INFO L226 Difference]: Without dead ends: 96 [2024-11-06 18:31:23,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-06 18:31:23,150 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 238 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:23,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 127 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:31:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-06 18:31:23,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 38. [2024-11-06 18:31:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-06 18:31:23,165 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 32 [2024-11-06 18:31:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:23,165 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-06 18:31:23,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-06 18:31:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-06 18:31:23,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:23,167 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:23,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 18:31:23,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:23,374 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:23,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash -285043146, now seen corresponding path program 3 times [2024-11-06 18:31:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078689557] [2024-11-06 18:31:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:23,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:23,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:23,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:31:23,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:23,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078689557] [2024-11-06 18:31:23,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078689557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:31:23,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579772660] [2024-11-06 18:31:23,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:31:23,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:23,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:23,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:31:23,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 18:31:23,779 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-06 18:31:23,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:31:23,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:31:23,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:31:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-06 18:31:23,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:31:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-06 18:31:23,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579772660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:31:23,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:31:23,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2024-11-06 18:31:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903812724] [2024-11-06 18:31:23,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:31:23,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-06 18:31:23,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-06 18:31:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2024-11-06 18:31:23,959 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:31:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:25,509 INFO L93 Difference]: Finished difference Result 173 states and 214 transitions. [2024-11-06 18:31:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-06 18:31:25,510 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2024-11-06 18:31:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:25,511 INFO L225 Difference]: With dead ends: 173 [2024-11-06 18:31:25,511 INFO L226 Difference]: Without dead ends: 145 [2024-11-06 18:31:25,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1841 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1913, Invalid=4249, Unknown=0, NotChecked=0, Total=6162 [2024-11-06 18:31:25,514 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 360 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:25,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 108 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:31:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-06 18:31:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 81. [2024-11-06 18:31:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-06 18:31:25,546 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 38 [2024-11-06 18:31:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:25,546 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-06 18:31:25,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:31:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-06 18:31:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-06 18:31:25,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:25,547 INFO L215 NwaCegarLoop]: trace histogram [44, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:25,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:31:25,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:25,748 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:25,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1283825630, now seen corresponding path program 4 times [2024-11-06 18:31:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:25,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301027567] [2024-11-06 18:31:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:25,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:26,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:26,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 436 proven. 66 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-06 18:31:26,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:26,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301027567] [2024-11-06 18:31:26,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301027567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:31:26,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794509835] [2024-11-06 18:31:26,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:31:26,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:26,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:26,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:31:26,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:31:26,378 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:31:26,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:31:26,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-06 18:31:26,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:31:26,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-06 18:31:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-06 18:31:26,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:31:26,614 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-06 18:31:26,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 27 [2024-11-06 18:31:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1148 trivial. 0 not checked. [2024-11-06 18:31:26,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794509835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:31:26,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:31:26,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 23 [2024-11-06 18:31:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428960972] [2024-11-06 18:31:26,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:31:26,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-06 18:31:26,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-06 18:31:26,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2024-11-06 18:31:26,676 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:28,406 INFO L93 Difference]: Finished difference Result 293 states and 360 transitions. [2024-11-06 18:31:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-06 18:31:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 81 [2024-11-06 18:31:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:28,408 INFO L225 Difference]: With dead ends: 293 [2024-11-06 18:31:28,408 INFO L226 Difference]: Without dead ends: 234 [2024-11-06 18:31:28,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2168 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1876, Invalid=5434, Unknown=0, NotChecked=0, Total=7310 [2024-11-06 18:31:28,412 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 647 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:28,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 182 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-06 18:31:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-06 18:31:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 88. [2024-11-06 18:31:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 84 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-11-06 18:31:28,427 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 81 [2024-11-06 18:31:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:28,428 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-11-06 18:31:28,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-11-06 18:31:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-06 18:31:28,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:28,429 INFO L215 NwaCegarLoop]: trace histogram [48, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:28,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:31:28,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-06 18:31:28,634 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:28,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1882438674, now seen corresponding path program 1 times [2024-11-06 18:31:28,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:28,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249856745] [2024-11-06 18:31:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:29,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:29,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 511 proven. 78 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-11-06 18:31:29,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249856745] [2024-11-06 18:31:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249856745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:31:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501448007] [2024-11-06 18:31:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:29,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:29,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:29,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:31:29,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-06 18:31:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:29,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-06 18:31:29,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:31:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 511 proven. 78 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-11-06 18:31:29,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:31:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 511 proven. 78 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2024-11-06 18:31:29,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501448007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:31:29,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:31:29,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2024-11-06 18:31:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932716521] [2024-11-06 18:31:29,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:31:29,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-06 18:31:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-06 18:31:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-11-06 18:31:29,880 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 43 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 43 states have internal predecessors, (68), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:30,462 INFO L93 Difference]: Finished difference Result 363 states and 485 transitions. [2024-11-06 18:31:30,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-06 18:31:30,463 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 43 states have internal predecessors, (68), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 88 [2024-11-06 18:31:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:30,464 INFO L225 Difference]: With dead ends: 363 [2024-11-06 18:31:30,464 INFO L226 Difference]: Without dead ends: 298 [2024-11-06 18:31:30,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-11-06 18:31:30,466 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 593 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:30,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 181 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:31:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-06 18:31:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 144. [2024-11-06 18:31:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.0642857142857143) internal successors, (149), 140 states have internal predecessors, (149), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2024-11-06 18:31:30,494 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 88 [2024-11-06 18:31:30,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:30,494 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2024-11-06 18:31:30,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 43 states have internal predecessors, (68), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2024-11-06 18:31:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-06 18:31:30,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:30,496 INFO L215 NwaCegarLoop]: trace histogram [104, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:30,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-06 18:31:30,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-06 18:31:30,700 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:30,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1885287406, now seen corresponding path program 2 times [2024-11-06 18:31:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:30,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636723886] [2024-11-06 18:31:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:30,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:32,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:32,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5802 backedges. 2191 proven. 351 refuted. 0 times theorem prover too weak. 3260 trivial. 0 not checked. [2024-11-06 18:31:32,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:32,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636723886] [2024-11-06 18:31:32,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636723886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:31:32,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521552835] [2024-11-06 18:31:32,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:31:32,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:32,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:32,092 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:31:32,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-06 18:31:32,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:31:32,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:31:32,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-06 18:31:32,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:31:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5802 backedges. 2191 proven. 351 refuted. 0 times theorem prover too weak. 3260 trivial. 0 not checked. [2024-11-06 18:31:32,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:31:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5802 backedges. 2191 proven. 351 refuted. 0 times theorem prover too weak. 3260 trivial. 0 not checked. [2024-11-06 18:31:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521552835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:31:33,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:31:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 85 [2024-11-06 18:31:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814379336] [2024-11-06 18:31:33,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:31:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-06 18:31:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-06 18:31:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=4001, Unknown=0, NotChecked=0, Total=7140 [2024-11-06 18:31:33,968 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand has 85 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:35,525 INFO L93 Difference]: Finished difference Result 685 states and 919 transitions. [2024-11-06 18:31:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-06 18:31:35,525 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 144 [2024-11-06 18:31:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:35,528 INFO L225 Difference]: With dead ends: 685 [2024-11-06 18:31:35,528 INFO L226 Difference]: Without dead ends: 578 [2024-11-06 18:31:35,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4425 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4732, Invalid=7700, Unknown=0, NotChecked=0, Total=12432 [2024-11-06 18:31:35,534 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1197 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:35,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 309 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:31:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-06 18:31:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 256. [2024-11-06 18:31:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.0357142857142858) internal successors, (261), 252 states have internal predecessors, (261), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 265 transitions. [2024-11-06 18:31:35,578 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 265 transitions. Word has length 144 [2024-11-06 18:31:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:35,578 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 265 transitions. [2024-11-06 18:31:35,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:31:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 265 transitions. [2024-11-06 18:31:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-06 18:31:35,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:35,584 INFO L215 NwaCegarLoop]: trace histogram [216, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:35,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-06 18:31:35,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-06 18:31:35,789 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:35,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash 198013934, now seen corresponding path program 3 times [2024-11-06 18:31:35,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:35,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330679446] [2024-11-06 18:31:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:35,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:39,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:31:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:39,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:31:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:31:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 24114 backedges. 9079 proven. 1485 refuted. 0 times theorem prover too weak. 13550 trivial. 0 not checked. [2024-11-06 18:31:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:31:39,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330679446] [2024-11-06 18:31:39,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330679446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:31:39,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776707620] [2024-11-06 18:31:39,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:31:39,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:39,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:31:39,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:31:39,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-06 18:31:39,909 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-06 18:31:39,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:31:39,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-06 18:31:39,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:31:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 24114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24113 trivial. 0 not checked. [2024-11-06 18:31:40,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:31:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24113 trivial. 0 not checked. [2024-11-06 18:31:40,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776707620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:31:40,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:31:40,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 5, 5] total 64 [2024-11-06 18:31:40,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126182963] [2024-11-06 18:31:40,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:31:40,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-06 18:31:40,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:31:40,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-06 18:31:40,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1622, Invalid=2410, Unknown=0, NotChecked=0, Total=4032 [2024-11-06 18:31:40,487 INFO L87 Difference]: Start difference. First operand 256 states and 265 transitions. Second operand has 64 states, 64 states have (on average 1.65625) internal successors, (106), 64 states have internal predecessors, (106), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:31:57,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:31:57,908 INFO L93 Difference]: Finished difference Result 1852 states and 2315 transitions. [2024-11-06 18:31:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2024-11-06 18:31:57,908 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.65625) internal successors, (106), 64 states have internal predecessors, (106), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 256 [2024-11-06 18:31:57,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:31:57,915 INFO L225 Difference]: With dead ends: 1852 [2024-11-06 18:31:57,915 INFO L226 Difference]: Without dead ends: 1661 [2024-11-06 18:31:57,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39340 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=34942, Invalid=83050, Unknown=0, NotChecked=0, Total=117992 [2024-11-06 18:31:57,925 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9417 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9417 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1549 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 18:31:57,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9417 Valid, 262 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1549 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 18:31:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2024-11-06 18:31:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 272. [2024-11-06 18:31:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 268 states have (on average 1.044776119402985) internal successors, (280), 268 states have internal predecessors, (280), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:31:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 284 transitions. [2024-11-06 18:31:57,972 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 284 transitions. Word has length 256 [2024-11-06 18:31:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:31:57,972 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 284 transitions. [2024-11-06 18:31:57,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.65625) internal successors, (106), 64 states have internal predecessors, (106), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-06 18:31:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 284 transitions. [2024-11-06 18:31:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-06 18:31:57,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:31:57,975 INFO L215 NwaCegarLoop]: trace histogram [220, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:31:57,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-06 18:31:58,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:31:58,175 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:31:58,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:31:58,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1823773125, now seen corresponding path program 4 times [2024-11-06 18:31:58,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:31:58,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143717861] [2024-11-06 18:31:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:31:58,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:31:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:01,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:32:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:01,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:32:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 25042 backedges. 9412 proven. 1540 refuted. 0 times theorem prover too weak. 14090 trivial. 0 not checked. [2024-11-06 18:32:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:32:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143717861] [2024-11-06 18:32:01,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143717861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:32:01,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543793852] [2024-11-06 18:32:01,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:32:01,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:32:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:32:01,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:32:01,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-06 18:32:01,880 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:32:01,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:32:01,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:32:01,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:32:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25042 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 25009 trivial. 0 not checked. [2024-11-06 18:32:02,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:32:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25042 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 25009 trivial. 0 not checked. [2024-11-06 18:32:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543793852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:32:02,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:32:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 7, 7] total 66 [2024-11-06 18:32:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706969698] [2024-11-06 18:32:02,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:32:02,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-06 18:32:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:32:02,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-06 18:32:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1680, Invalid=2610, Unknown=0, NotChecked=0, Total=4290 [2024-11-06 18:32:02,246 INFO L87 Difference]: Start difference. First operand 272 states and 284 transitions. Second operand has 66 states, 66 states have (on average 1.696969696969697) internal successors, (112), 66 states have internal predecessors, (112), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:32:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:32:05,499 INFO L93 Difference]: Finished difference Result 1007 states and 1313 transitions. [2024-11-06 18:32:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-06 18:32:05,500 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.696969696969697) internal successors, (112), 66 states have internal predecessors, (112), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 272 [2024-11-06 18:32:05,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:32:05,503 INFO L225 Difference]: With dead ends: 1007 [2024-11-06 18:32:05,503 INFO L226 Difference]: Without dead ends: 801 [2024-11-06 18:32:05,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 596 SyntacticMatches, 3 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2337 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5170, Invalid=10082, Unknown=0, NotChecked=0, Total=15252 [2024-11-06 18:32:05,505 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1567 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-06 18:32:05,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 316 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-06 18:32:05,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-06 18:32:05,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 307. [2024-11-06 18:32:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 303 states have (on average 1.066006600660066) internal successors, (323), 303 states have internal predecessors, (323), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:32:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 327 transitions. [2024-11-06 18:32:05,573 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 327 transitions. Word has length 272 [2024-11-06 18:32:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:32:05,574 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 327 transitions. [2024-11-06 18:32:05,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.696969696969697) internal successors, (112), 66 states have internal predecessors, (112), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:32:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 327 transitions. [2024-11-06 18:32:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-06 18:32:05,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:32:05,577 INFO L215 NwaCegarLoop]: trace histogram [224, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:32:05,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-06 18:32:05,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:32:05,778 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:32:05,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:32:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1652965712, now seen corresponding path program 1 times [2024-11-06 18:32:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:32:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671026688] [2024-11-06 18:32:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:32:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:32:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:08,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:32:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:08,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:32:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 25947 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 14600 trivial. 0 not checked. [2024-11-06 18:32:08,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:32:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671026688] [2024-11-06 18:32:08,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671026688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:32:08,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387340456] [2024-11-06 18:32:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:32:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:32:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:32:08,930 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:32:08,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-06 18:32:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:09,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-06 18:32:09,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:32:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 25947 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 14600 trivial. 0 not checked. [2024-11-06 18:32:11,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:32:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 25947 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 14600 trivial. 0 not checked. [2024-11-06 18:32:14,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387340456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:32:14,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:32:14,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 175 [2024-11-06 18:32:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178400317] [2024-11-06 18:32:14,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:32:14,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-06 18:32:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:32:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-06 18:32:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13459, Invalid=16991, Unknown=0, NotChecked=0, Total=30450 [2024-11-06 18:32:14,776 INFO L87 Difference]: Start difference. First operand 307 states and 327 transitions. Second operand has 175 states, 175 states have (on average 1.1542857142857144) internal successors, (202), 175 states have internal predecessors, (202), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:32:23,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:32:23,889 INFO L93 Difference]: Finished difference Result 1793 states and 2622 transitions. [2024-11-06 18:32:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-06 18:32:23,889 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 1.1542857142857144) internal successors, (202), 175 states have internal predecessors, (202), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 279 [2024-11-06 18:32:23,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:32:23,896 INFO L225 Difference]: With dead ends: 1793 [2024-11-06 18:32:23,896 INFO L226 Difference]: Without dead ends: 1553 [2024-11-06 18:32:23,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19605 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=20242, Invalid=33350, Unknown=0, NotChecked=0, Total=53592 [2024-11-06 18:32:23,900 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3480 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:32:23,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 502 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1057 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:32:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-06 18:32:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 539. [2024-11-06 18:32:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 535 states have (on average 1.0373831775700935) internal successors, (555), 535 states have internal predecessors, (555), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-06 18:32:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 559 transitions. [2024-11-06 18:32:23,997 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 559 transitions. Word has length 279 [2024-11-06 18:32:23,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:32:23,997 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 559 transitions. [2024-11-06 18:32:23,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 1.1542857142857144) internal successors, (202), 175 states have internal predecessors, (202), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-06 18:32:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 559 transitions. [2024-11-06 18:32:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-06 18:32:24,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:32:24,004 INFO L215 NwaCegarLoop]: trace histogram [456, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:32:24,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-06 18:32:24,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:32:24,204 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:32:24,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:32:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2016325296, now seen corresponding path program 2 times [2024-11-06 18:32:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:32:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381725470] [2024-11-06 18:32:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:32:24,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:32:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:35,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-06 18:32:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:35,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-06 18:32:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:32:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 105639 backedges. 39679 proven. 6555 refuted. 0 times theorem prover too weak. 59405 trivial. 0 not checked. [2024-11-06 18:32:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:32:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381725470] [2024-11-06 18:32:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381725470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:32:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075136477] [2024-11-06 18:32:35,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:32:35,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:32:35,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:32:35,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:32:35,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-06 18:32:36,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:32:36,778 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:32:36,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 4296 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-06 18:32:36,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:32:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 105639 backedges. 39679 proven. 6555 refuted. 0 times theorem prover too weak. 59405 trivial. 0 not checked. [2024-11-06 18:32:42,259 INFO L311 TraceCheckSpWp]: Computing backward predicates...